On Mon, May 10, 2021 at 08:53:31AM -0500, Peter Bergner wrote:
> On 5/10/21 7:52 AM, Pat Haugen wrote:
> > On 5/7/21 6:00 PM, Segher Boessenkool wrote:
> >> So what is this replaced with?  Was it an "xxlmr" and it is just
> >> unnecessary now?
> > 
> > Different RA choice made the reg copy unnecessary.
> > 
> > <   xxspltib 0,8
> > <   xxlor 32,0,0
> > ---
> >>    xxspltib 32,8
> 
> Given how we use xxlor's for vsx reg copies and how easily they
> can change, I'm not sure we should even be counting them at all,
> since they can change with the phase of the moon or the day of 
> the week.

Yeah -- otoh, it is probably a good idea to keep it for some simpler
testcases, so we are alerted to regressions on this.  It's a tradeoff,
there is no one best way.  But maybe remove it if it "randomly" changed
on a testcase?


Segher

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